ex26_1.c

linux 高级编程的例子源码,包括了本书上的所有代码

/*filename:ex26_1.c */
#include <gtk/gtk.h>

static void cb_itemsignal (GtkWidget *item, gchar *signame)
{
  gchar *name;
  GtkLabel *label;

  label = GTK_LABEL (GTK_BIN (item)->child);
   gtk_label_get (label, &name);
   g_print ("%s called for item %s->%p, level %d\n", signame, name,
	   item, GTK_TREE (item->parent)->level);
}

static void cb_unselect_child (GtkWidget *root_tree, GtkWidget *child,
			       GtkWidget *subtree)
{
  g_print ("unselect_child called for root tree %p, subtree %p, child %p\n",
	   root_tree, subtree, child);
}

static void cb_select_child (GtkWidget *root_tree, GtkWidget *child,
			     GtkWidget *subtree)
{
  g_print ("select_child called for root tree %p, subtree %p, child %p\n",
	   root_tree, subtree, child);
}

static void cb_selection_changed (GtkWidget *tree)
{
  GList *i;
  
  g_print ("selection_change called for tree %p\n", tree);
  g_print ("selected objects are:\n");

  i = GTK_TREE_SELECTION(tree);
  while (i){
    gchar *name;
    GtkLabel *label;
    GtkWidget *item;

    item = GTK_WIDGET (i->data);
    label = GTK_LABEL (GTK_BIN (item)->child);
    gtk_label_get (label, &name);
    g_print ("\t%s on level %d\n", name, GTK_TREE
	     (item->parent)->level);
    i = i->next;
  }
}

int main (int argc, char *argv[])
{
  GtkWidget *window, *scrolled_win, *tree;
  static gchar *itemnames[] = {"Winc", "Wind", "Root", "Flppy",
			       "New"};
  gint i;

  gtk_init (&argc, &argv);

  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
  gtk_signal_connect (GTK_OBJECT(window), "delete_event",
		      GTK_SIGNAL_FUNC (gtk_main_quit), NULL);
  gtk_container_set_border_width (GTK_CONTAINER(window), 5);

  scrolled_win = gtk_scrolled_window_new (NULL, NULL);
  gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_win),
				  GTK_POLICY_AUTOMATIC,
				  GTK_POLICY_AUTOMATIC);
  gtk_widget_set_usize (scrolled_win, 150, 200);
  gtk_container_add (GTK_CONTAINER(window), scrolled_win);
  gtk_widget_show (scrolled_win);
  
  tree = gtk_tree_new();
  g_print ("root tree is %p\n", tree);
  gtk_signal_connect (GTK_OBJECT(tree), "select_child",
		      GTK_SIGNAL_FUNC(cb_select_child), tree);
  gtk_signal_connect (GTK_OBJECT(tree), "unselect_child",
		      GTK_SIGNAL_FUNC(cb_unselect_child), tree);
  gtk_signal_connect (GTK_OBJECT(tree), "selection_changed",
		      GTK_SIGNAL_FUNC(cb_selection_changed), tree);
  gtk_scrolled_window_add_with_viewport (GTK_SCROLLED_WINDOW(scrolled_win), tree);
  gtk_tree_set_selection_mode (GTK_TREE(tree),
			       GTK_SELECTION_MULTIPLE);
  gtk_widget_show (tree);

  for (i = 0; i < 5; i++){
    GtkWidget *subtree, *item;
    gint j;

   item = gtk_tree_item_new_with_label (itemnames[i]);
   gtk_signal_connect (GTK_OBJECT(item), "select",
			GTK_SIGNAL_FUNC(cb_itemsignal), "select");
   gtk_signal_connect (GTK_OBJECT(item), "deselect",
			GTK_SIGNAL_FUNC(cb_itemsignal), "deselect");
   gtk_signal_connect (GTK_OBJECT(item), "toggle",
			GTK_SIGNAL_FUNC(cb_itemsignal), "toggle");
   gtk_signal_connect (GTK_OBJECT(item), "expand",
			GTK_SIGNAL_FUNC(cb_itemsignal), "expand");
   gtk_signal_connect (GTK_OBJECT(item), "collapse",
			GTK_SIGNAL_FUNC(cb_itemsignal), "collapse");
   gtk_tree_append (GTK_TREE(tree), item);
   gtk_widget_show (item);
   subtree = gtk_tree_new();
   g_print ("-> item %s->%p, subtree %p\n", itemnames[i], item,
	     subtree);

   gtk_signal_connect (GTK_OBJECT(subtree), "select_child",
			GTK_SIGNAL_FUNC(cb_select_child), subtree);
   gtk_signal_connect (GTK_OBJECT(subtree), "unselect_child",
			GTK_SIGNAL_FUNC(cb_unselect_child), subtree);
   gtk_tree_set_selection_mode (GTK_TREE(subtree),
				 GTK_SELECTION_SINGLE);
    gtk_tree_set_view_mode (GTK_TREE(subtree), GTK_TREE_VIEW_ITEM);
    gtk_tree_item_set_subtree (GTK_TREE_ITEM(item), subtree);

    for (j = 0; j < 5; j++){
      GtkWidget *subitem;

    subitem = gtk_tree_item_new_with_label (itemnames[j]);
    gtk_signal_connect (GTK_OBJECT(subitem), "select",
			  GTK_SIGNAL_FUNC(cb_itemsignal), "select");
    gtk_signal_connect (GTK_OBJECT(subitem), "deselect",
			  GTK_SIGNAL_FUNC(cb_itemsignal), "deselect");
    gtk_signal_connect (GTK_OBJECT(subitem), "toggle",
			  GTK_SIGNAL_FUNC(cb_itemsignal), "toggle");
    gtk_signal_connect (GTK_OBJECT(subitem), "expand",
			  GTK_SIGNAL_FUNC(cb_itemsignal), "expand");
    gtk_signal_connect (GTK_OBJECT(subitem), "collapse",
			  GTK_SIGNAL_FUNC(cb_itemsignal), "collapse");
    g_print ("-> -> item %s->%p\n", itemnames[j], subitem);
    gtk_tree_append (GTK_TREE(subtree), subitem);
    gtk_widget_show (subitem);
    }
  }
 
  gtk_main();
  return 0;
}